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Weather & Climate
Pullman, Washington, United States
Overview
Climate data and monthly weather averages for Pullman.
Key Metrics
Annual Avg
9.4°C
Summer Avg
20.4°C
Winter Avg
-0.9°C
Record High
39.5°C
Record Low
-27.8°C
Annual Precipitation
663 mm
Avg Humidity
68%
Summer Humidity
52%
Winter Humidity
86%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 14.9° | -1.4° | -27.8° | 81.5 | 89% | 40 | 48.9 |
| Feb | 16.3° | 0.4° | -27.1° | 62.4 | 83% | 62 | 51.4 |
| Mar | 24.5° | 4.3° | -17.6° | 78.7 | 76% | 102 | 42.8 |
| Apr | 29.4° | 8° | -5.5° | 60.6 | 69% | 144 | 44.6 |
| May | 33° | 13.2° | -2.9° | 62 | 65% | 187 | 49.8 |
| Jun | 38.8° | 16.9° | 2.8° | 49.5 | 62% | 203 | 45.2 |
| Jul | 39.1° | 22.4° | 7° | 12.4 | 49% | 233 | 38.7 |
| Aug | 39.5° | 21.8° | 6.2° | 18.6 | 46% | 192 | 40.9 |
| Sep | 36.7° | 16.9° | -3° | 23.4 | 50% | 136 | 41.4 |
| Oct | 31.5° | 9.5° | -12.1° | 53.3 | 64% | 87 | 47.4 |
| Nov | 21.7° | 2.9° | -17.4° | 75 | 78% | 44 | 50.7 |
| Dec | 13.8° | -1.6° | -24.7° | 85.6 | 87% | 31 | 47.8 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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